Cyeus m



(No Model.)

C. M. GARNAHAN.

- MACHINE EOE SPEHVTING- EAESAND SEEETS 0E IEONOE STEEL. No. 314,2 2-1. 15; Patented Mar. 24,` 1885.

e UNiTnD STATES PATENT @rrr-cl3;

GYRUS M. CARNAHAN, OF PITTSBRG, PENNSYLVANIA.

MACHlNE'-'OR SPLITTlNG BARS A SECIFIGATION 'forming part o Letters Patent No. 314,221, dated March 24, 1885.

Applicant nieu Jury e, resi. '(S'Q mmm.)

To all whom it may c01wern,.`

Be it known that I, CYRUs M. CARNAHAN, a citizen of the United States, residing at Pittsburg, in the county of Allegheny' and State of Pennsylvania, haveinvented a new and useful Improvement in Metal Splitting and Sloti ting Machines, of which the following is al specication.

rlhis invention relates to improvements in metal splitting and slotting machines; and it consists in the construction and arrangement which the ends of metallicbars can be cut or trimmed. as occasion may require.

ND SHEETS OF IRON OR STEEL.

Tothesliding head e on the opposite side of the machine is attached a narrow slittingtool, i, provided with an upwardly-inclined i and concave face, k, the lower end of which l terminates in a downward projection, l, that serves to keep the slitting-tool from entirely leaving the sharp-edged die-box m, wherein it is intended to work up and down, the projection Z acting as a guide.or in a measure directof paris, as will be hereinafter described, and ing the plate or bar of iron being operated on.

In the accompanying drawings, Figure 1 1 represents an elevation of that side ofthe niachine carrying oblong eccentric gear-wheels i so engaged as to impart proper motion to the l vertically-moving punch and shear; Fig. 2, a front view of the machine, partly in section; Fig. 3, a reverse side of the machine, eXhibitl ing the means used in giving an intermittent motion to the feeding device; Fig. 4, a perl spectiveview of movable and stationary spliti tingdies. Fig. 5 represents a broad bar of i metal split or cut in two lengthwise and obliquely, afterthe manner and in accordance with the plan of myinvention.

For the purposes hereinbefore mentioned I l construct a machine by providing a cast-iron l frame, A, of suitable size and sufficiently strong to sustain in a proper manner the several moving parts. Through the top of this i frame A are arranged three parallel shafts, a a d, each of which is provided with an oblong eccentric gear-wheel, b, so combined and operating with respect to each other, the cams @,and connecting-links d as to impart an alternate vertically-reciprocating movement to the sliding heads e f and the tools attached thereto, in such a manner as that each shall have a quick upward "movement, butslow and powerful down-thrust. To one, f,of these verticallymoving heads is attached an ordinary shearblade, g, made to work in conjunction with a tremity pivoted to It will be seen that by placing the end of a broad har or lthick plate of iron or steel on the boX die m and advancing it-under the slitting-tool i as it rises therefrom on its descent a piece will be cut or punched out of said bar or plate equal in length to the distance so advanced, being limited in that respect by the projection Z at the lower extremity of the cutting-tool i. Ou a further advancement of the iron bar or plate it will straddle the projection l, which will then guide the iron for a continuation of the cuts until the entire bar or plate is divided or split in two parts,which split or line of separation may be parallel with the edges oi' the bar, or obliqnely thereto, thus making tapering or long wedgeshaped pieces, such as are used in agricultural machines and for other purposes.

To give the iron har or platea regular automatic and adjustable feed movement toward and under the splitting-tool i, a horizontallysliding table, n, is provided, the upper surface of which is on alevel with that of the die-box m, and having on itsunder side along rack, o, or saw-toothed har operated on by a pawl, 10, connected by a link, q, to a crank, r, on a small rock-shaft, s, coupled by means of suitable beveled gear-wheelatto a vertically-moving rod, u, the upper end of which is hinged to a curved arm, o, having its opposite exihe main frame A of the machine, and in such a manner as that upon each revolution oi' the wheel w a projecting pin, x, in one ot' its arms will at the proper time bring about a forward movement of the sliding table n, the stroke or travel of which may be adjusted and regulated through the instrumentality of the set-screw y.

By this machine, when operated in accordance IOO with my invcntion,iron orsteel bars orplates ofany reasonable length may be divided longiof the a justable endwisemovable table n, provided with a rack and operated by a pawl tudinally without twisting them out of shape mechanism, as shown and described.

or warping them to any extent; and as the out is progressive by a series of completely punched-out pieces, no extra strain is imparted to other portions of the metal, which will be left smoother along the line of separation than whenV cut or divided by any other method.

Having thus described the nature of my invention and the means of putting it into practice, I claiml. The combination, with the frame A, its shafts a, gear-Wheels b, and connectinglinks d, the vertically-sliding heads e f, the latter having the blade g, and the stationary block 71,

2. As an improvement in metal splitting 2o ,I and slotting machines, the same consisting of the frame A, shafts a, gear-wheels b, cams c. links d, and. head e, having` tool z', provided With concave face k and projection Z, the diebox m. and the horizontally-sliding table n, 25 provided with rack o, and mechanism, as described,for operating the machine, as specified.

CYRUS M. CA RNAHAN.

Witnesses:

H. T. MORRIS, J. H. MCMILLEN. 

